/**
 * 
 */
package com.surekam.hometown.util.coder;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * @author shangchao
 * 
 */
public class MD5 {

	public static String stringToMD5(String plainText) {
		try {
			MessageDigest md = MessageDigest.getInstance("MD5");
			md.update(plainText.getBytes());
			byte b[] = md.digest();
			int i;
			StringBuffer buf = new StringBuffer("");
			for (int offset = 0; offset < b.length; offset++) {
				i = b[offset];
				if (i < 0)
					i += 256;
				if (i < 16)
					buf.append("0");
				buf.append(Integer.toHexString(i));
			}
//			System.out.println("result: " + buf.toString());// 32位的加密
			System.out.println("result: " + buf.toString().substring(8, 24));// 16位的加密
			return buf.toString().substring(8, 24);
		} catch (NoSuchAlgorithmException e) {
		}
		return null;
	}

}
